N2pub.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “ps” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “label” not allowed on element “input” at this point.
Attribute “label” not allowed on element “textarea” at this point.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “value” not allowed on element “textarea” at this point.
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